JPH062386Y2 - Speaker mount - Google Patents

Description

[Detailed Description of the Invention] "Purpose of Invention" (Industrial field of application) The present invention puts a speaker into a speaker enclosure (acoustic reflection sealed box: hereinafter simply referred to as "sealed box") formed of ceramic material. The present invention relates to a fixture used for fixing.

(Conventional Closed Box) Conventionally, there has been a closed box 1 as shown in FIG. The closed box 1
The outer shape of No. 1 was a deformed oval shape in which the acoustic reflection wall did not have sharp corners. This is realized by using ceramic as the material of the closed box 1. Since the closed box 1 does not have sharp corners, a boundary wave does not occur in the sound output from the speaker 2, and an excellent directional characteristic that the sound is evenly spread over the front side of the speaker 2 is provided. Had. Further, since the ceramic is used as a material, there are advantages that the high rigidity and high density characteristics of the ceramic can be fully utilized, a clear acoustic effect can be obtained, and box squeal can be suppressed.

By the way, the various advantages of the ceramic closed box 1 as described above can be achieved only when the closed box 1 and the speaker 2 are firmly connected to each other and have appropriate vibration absorption. That is, speaker 2
Needless to say, it outputs sound, and the sound is generated as vibration. Therefore, if there is a slight play in the state where the closed box 1 and the speaker 2 are joined together, the speaker 2 will chatter with respect to the closed box 1 and the performance of the speaker 2 itself will be reduced. It will be halved or destroyed.

(Problems to be Solved by the Invention) The closed box 1 made of ceramic has a firing process during its manufacturing process, and undergoes a large external shrinkage after firing.
For this reason, it has been extremely difficult to provide the external dimensions with high accuracy. On the other hand, the main body of the speaker 2 is made of metal or resin, and is formed with high accuracy.
Therefore, it has been extremely difficult to firmly bond the both and also to bond the both. Of course, since the closed box 1 is made of ceramic, it cannot be done by tapping the closed box 1 to provide screw holes for screw tightening. As described above, in the closed box 1 and the speaker 2, unless the two are firmly coupled and have appropriate vibration absorption between them, the ceramic has high rigidity and high density. There was a risk that the function of the closed box 1 would be negative.

The present invention has been made in view of the above circumstances, and is a novel one in which a ceramic hermetically sealed box and a speaker can be firmly coupled and the coupling can have an appropriate vibration absorbing property. The purpose of the present invention is to provide a speaker fixture (hereinafter, referred to as the present fixture).

"Construction of the device" (Means for solving the problem) The main point of the mounting fixture of the present invention is a mounting fixture used for fixing a speaker to a ceramic speaker enclosure, which is a screw hole on the periphery of the speaker. Corresponding to, the bush with elastic material is inserted into a large-diameter mounting hole formed in the speaker enclosure in a loose-fitting manner with excellent vibration absorption, and the end of the bush on the side opposite to the flange side. The nut is integrally connected, and a collar having an outer diameter that is externally fitted to the collar side neck portion of the bush and has an outer diameter that can be inserted into the mounting hole of the speaker enclosure. The bush is connected to the collar outer fitting portion and the nut. The point is that a space is formed between the part and the part to allow the radial expansion.

(Function) The bush attached to the closed box is adapted to be inserted through a large-diameter mounting hole formed in the closed box in a loose fitting manner, and the positioning is performed by the collar side neck portion of the bush. It is supposed to be done by the collar fitted on. The screw inserted from the front plate side into the screw hole of the speaker is inserted into the bush from the end portion of the bush on the flange side, and is screwed into the nut connected to the other side. The bush is made of an elastic material, and a space is formed between the connecting portion of the nut and the outer fitting portion of the collar so that the bush bends in a radially expanded shape. Therefore, the more the screw is tightened with respect to the nut, the stronger the resistance force of pulling the nut to the collar outer fitting portion becomes,
The space portion of the bush is expanded in diameter. Moreover, the vibration absorbing property of the space portion is not lost. The expanded diameter portion comes into contact with the inside of the wall surface of the closed box, and the speaker is firmly fixed. Further, the elastic material forming the bush has excellent vibration absorbing properties, and the connected state between the speaker and the closed box is strong and has appropriate elasticity (vibration absorbing property). Therefore, chatter of the speaker with respect to the closed box does not occur.

(Embodiment) The present invention will be described below with reference to the drawings showing an embodiment thereof.

FIG. 1 is a side sectional view showing a fitting of the present invention. The fitting of the present invention comprises a bush 3 with a collar, a nut 4 and a collar 5.

The bush 3 is made of an elastic material such as rubber or a synthetic resin material having excellent vibration absorption. The bush 3 has an outer shape of a cylindrical shape in which a flange 6 protruding in the radial direction is provided on the outer periphery of the tip portion 3a. Rear end 3b of the bush 3
A nut 4 is embedded in the end (at the end opposite to the flanged side). The nut 4 is provided so that the female screw 4a thereof extends along the same direction as the cylindrical hole of the bush 3. Further, a collar 5 is externally fitted to a tip portion 3a of the bush 3 and a neck portion 3c from which the collar 6 projects. The color 5
Is formed of a metal material such as brass or gun metal or a hard resin material. In the bush 3, a space formed only by the elastic material of the bush 3 is formed between the embedded portion of the nut 4 and the outer fitting portion of the collar 5.

FIG. 2 is a front view showing the closed box 1 in the case of using the fitting of the present invention, and FIG. 3 is a side sectional view thereof. A speaker 2 (shown by a chain double-dashed line in FIG. 3) is provided on the front side of the closed box 1.
A circular hole 1a for attaching the is attached. Around the circular hole 1a, a square inner recess 1b is provided so as to absorb the thickness of the front plate of the speaker 2.
The inner flange 1b has mounting holes 1c larger than the screw holes at portions corresponding to screw holes (not shown) for inserting screws 7 (see FIG. 5) at four corners of the front plate of the speaker 2. , 1c, ... are drilled. In the present embodiment, the mounting hole 1c has a long hole shape directed inward of the circular hole 1a for the speaker 2,
Moreover, the mounting hole 1c and the circular hole 1a are cut out so as to communicate with each other.

In the fixture of the present invention, the outer diameter of the collar 5 is the closed box 1
The collar 5 is formed in such a size that it can be inserted into the mounting hole 1c of the inner collar 1b in which the mounting hole 1c is formed.
Is approximately equal to the wall thickness dimension of Further, the collar 6 of the bush 3 is formed such that the outer diameter thereof is slightly larger than the outer diameter of the collar 5.

FIG. 4 is a side sectional view showing a fixed state of the speaker 2 by the mounting fixture of the present invention. This figure corresponds to a state in which the closed box 1 is cross-sectioned at the position of line AA in FIG. The mounting fixture of the present invention, for the mounting hole 1c formed in the inner collar 1b of the closed box 1,
Insert so that nut 4 precedes. In this embodiment, since the mounting hole 1c of the closed box 1 is formed in a long hole shape as described above, the E-ring 8 is fitted to the bush 3 of the fitting of the present invention. Further, butyl rubber or the like was applied to the outer peripheral surface of the collar 5. By doing so, the mounting fixture can be mounted by laterally moving the mounting fixture of the present invention from the circular hole 1a of the closed box 1 toward the mounting hole 1c,
Until the speaker 2 is screw-fastened, the state in which the mounting position of the mounting bracket of the present invention is adjusted can be temporarily held. Further, since the butyl rubber maintains the uncured state, it has an advantage that vibration of the collar 5 and the closed box 1 can be absorbed. After attaching the fitting of the present invention to the closed box 1, the speaker-2 is fitted into the inner collar 1b of the closed box 1 and the screw 7 is inserted into the front plate of the speaker-2. The screw 7 is inserted into the cylindrical hole of the bush 3 in the fitting of the present invention and contacts the nut 4. When screw 7 is tightened, screw 7
Engages with the nut 4, and pulls the nut 4. Therefore, the space formed only by the elastic material formed between the collar-5 and the nut 4
The more the screw 7 is tightened, the larger the diameter of the thread portion is, while the pulling resistance is increased. Therefore, the E-ring 8 is pressed into the wall surface of the closed box 1, and the speaker-2 is closed box.
Tightly coupled to 1. Further, even in such a coupled state, the expanded diameter portion of the bush 3 comes to be interposed between the nut 4 and the closed box 1, so that the vibration absorbing property of the space portion is lost. Vibrations between them are absorbed. In the figure, reference numeral 9 is a cushioning material made of foaming resin or the like. (Study of Another Mode) In the above-described embodiment, the mounting hole 1c of the closed box 1 is formed in a long hole shape, and the mounting hole 1c is notched so as to communicate with the circular hole 1a for the speaker 2. E-ring 8 required. However, if the mounting hole 1c is a round hole, E
The ring 8 is unnecessary. As described above, the configuration and shape of the attachment of the present invention can be appropriately changed according to the embodiment.

[Advantage of Device] As is clear from the above description, according to the speaker attachment of the present invention, the speaker can be firmly connected to the ceramic closed box, and an appropriate elasticity (vibration) can be applied to the connected state. It has become possible to have absorption.
Moreover, the more the screws for fixing the speaker are tightened to the fixture of the present invention, the stronger the above-mentioned coupled state becomes, and the vibration absorbing property is not adversely affected. Therefore, the speaker does not chatter with respect to the closed box. Therefore, various advantages obtained by making the closed box made of ceramic can be effectively utilized. Further, since the vibration of the speaker is not directly transmitted to the closed box, the screwed state of the screw is not loosened. Furthermore, the proposed fixture is structurally simple,
It has many excellent advantages such as easy manufacture.

[Brief description of drawings]

FIG. 1 is a side sectional view showing a fixture of the present invention, FIG. 2 is a front view showing a closed box when the fixture of the present invention is used, FIG. 3 is a side sectional view thereof, and FIG. 4 is a speaker using the fixture of the present invention. FIG. 5 is a side sectional view showing a fixed state, and FIG. 5 is a perspective view showing a state where the speaker is attached to the closed box. 1 ... airtight box, 2 ... speaker 3 ... bush with collar, 3c ... neck 4 ... nut, 5 ... collar 6 ... collar, 7 ... screw

Claims (1)

[Scope of utility model registration request] 1. A fixture used for fixing a speaker to a ceramic speaker enclosure, comprising:
A bush with an elastic material collar, which is inserted into a large-diameter mounting hole formed in the speaker enclosure corresponding to the screw hole of the speaker periphery in a loose fitting manner and has excellent vibration absorption, and a collar side of the bush. Comprises a nut integrally connected to the opposite end and a collar having an outer diameter that is fitted onto the collar side neck of the bush and has an outer diameter that can be inserted into the mounting hole of the speaker enclosure. A speaker fixture characterized in that a space capable of expanding and expanding is formed between the outer fitting portion and the nut connecting portion.